To use Custom Domain for a reseller website, we will have to create a separate website. In addition, to support HTTPS and SSL, we must provide a static public IP address for the reseller website. The reseller will also need to purchase a digital certifcate from companies like GoDaddy or Verisign. Because of the additional requirements, you must order White Label Reseller Service to use Custom Domain website. For more detailed info about DriveHQ reseller service, please read this PPT carefully.

I'm trying setup a custom mail domain. Register.com is the company I used to setup my domain. I change the IP (A-record) to reslove to 69.220.9.56 but the drivehq email is not letting me set up custom email domain. I ping the domain. See below. What I'm doing wrong?

You needed to configure your domain's MX record and A-record. It seems you had done so, and it is working fine now. You can verify it by opening a command window, and type in: nslookup -type=MX positivechg.com